This reference design is an automotive electric vehicle capacitor pre-charger power solution. The design is powered from the 12 V battery to charge a 4 mF capacitor bank to 400 V in 2 seconds. The design uses an isolated flyback controller operating at a switching frequency of 100 kHz. The initial output voltage is set for 60 V. A primary-side referenced control line is used to set the output to its final value of 400 V. Once the pre-charge sequence is complete, the UVLO function may be used to turn off the controller while the capacitor bank is connected to the rest of the system.
| Output voltage options | PMP21735.1 |
|---|---|
| Vin (Min) (V) | 9 |
| Vin (Max) (V) | 32 |
| Vout (Nom) (V) | 400 |
| Iout (Max) (A) | .8 |
| Output Power (W) | 320 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Flyback- Non Sync |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | 400 V DC Link Capacitor Pre-Charger Ref Design for Automotive HEV/EV Apps | Jun. 28, 2019 |
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.